DC's Legends of Tomorrow (OV)

From the creators of The Flash and Arrow comes this super hero team-up that combines characters from both shows — in addition to new heroes from the DC Comics pantheon. Having seen the future, a time-traveling rogue assembles a disparate band of heroes and villains to confront an unstoppable threat — with everything at stake.

Season 2Episode 17

In the season two finale, the Legends prepare to take off for their next destination, when a massive timequake rocks the ship. In order to try to fix what has happened, they are forced to break the one cardinal rule of time travel. But if they’re able to destroy the Spear of Destiny, they will face the ultimate consequence.